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engine_kafka.go
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/
engine_kafka.go
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package dbcommon
import (
"time"
"github.com/Shopify/sarama"
)
/*************************
* author: Dev0026
* createTime: 19-1-20
* updateTime: 19-1-20
* description:
*************************/
var senders = make([]*Sender, 0)
// ############### kafka Sender(异步) ###############
type Sender struct {
prod sarama.AsyncProducer
}
func WithSenderDefaultConfig() *sarama.Config {
cfg := sarama.NewConfig()
//cfg.Producer.RequiredAcks = sarama.WaitForLocal
cfg.Producer.MaxMessageBytes = int(sarama.MaxRequestSize)
cfg.Producer.Partitioner = sarama.NewRandomPartitioner // 随机partition
cfg.Producer.Return.Successes = true
cfg.Producer.Return.Errors = true
cfg.Producer.Timeout = 5 * time.Second
return cfg
}
// NewSender 创建一个异步kafka
func NewSender(addrs ...string) (*Sender, error) {
prod, err := sarama.NewAsyncProducer(addrs, WithSenderDefaultConfig())
if err != nil {
return nil, err
}
sender := &Sender{
prod: prod,
}
senders = append(senders, sender)
return sender, nil
}
// sender 错误时
func (s *Sender) OnError(errFunc func(*sarama.ProducerError)) {
if s == nil {
return
}
for err := range s.prod.Errors() {
if err != nil {
errFunc(err)
}
}
}
// sender 成功时
func (s *Sender) OnSuccess(succFunc func(*sarama.ProducerMessage)) {
if s == nil {
return
}
for succ := range s.prod.Successes() {
if succFunc != nil {
succFunc(succ)
}
}
}
// sender 发送
func (s *Sender) Send(topic, key string, data []byte) {
if s == nil {
return
}
msg := &sarama.ProducerMessage{
Topic: topic,
Key: sarama.StringEncoder(key),
Value: sarama.ByteEncoder(data),
}
s.prod.Input() <- msg
}
func CloseKafka() {
for _, one := range senders {
one.prod.Close()
}
}